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Finding the Fourth Proportional to 159,146.80, 238,720.20 and 74,854.56

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Solution

The fourth proportional to 159,146.80, 238,720.20 and 74,854.56 is: 112,281.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,146.80 : 238,720.20 = 74,854.56 : x
  2. Step 2: Convert to fraction form
    159,146.80/238,720.20 = 74,854.56/x
  3. Step 3: Cross multiply
    159,146.80x = 238,720.20 × 74,854.56
  4. Step 4: Simplify right side
    159,146.80x = 17,869,295,534.11
  5. Step 5: Solve for x
    x = 17,869,295,534.11/159,146.80
  6. Step 6: Final answer
    x = 112,281.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.